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Rest in peace, Twitter.
X, the platform formerly known as Twitter, will do Retire old domain today. This comes with a warning for you: If you don’t update your account’s security settings soon, you could get banned.
The shift marks another step in Elon Musk’s ongoing rebranding of the social network over the past two years. Musk, who bought Twitter in October 2022 and later renamed it X, made sweeping changes to the platform’s features and policies.
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The company informed users that anyone using hardware security keys or passkeys associated with twitter.com will have to re-register them under the new x.com domain. The deadline is today, November 10, after which affected accounts may be temporarily locked until the update is complete.
By November 10, we will require all accounts that use a security key as a 2FA method to re-register their key to continue accessing X. You can re-register your existing security key, or register a new one.
Reminder: If you registered a new security key, i.e….– Safety (@safety) October 24, 2025
X stressed that this move is not related to a data breach or security issue but is a necessary step in transferring the scope of the platform, marking the end of the last remnants of Twitter.
“This change is not related to any security concerns, and only affects Yubikeys and passkeys, not other two-factor authentication methods (such as authenticator apps),” Security account mentioned in X. Since security keys registered as a two-factor authentication method are currently associated with the previous domain, re-registering your security key will associate it with the new domain.
For most people, the change will go unnoticed. But if you rely on physical security keys, like YubiKeys, or use passkeys to log in without a password, you may be surprised if you don’t take action before the deadline.
Read also: Is it time to delete your X (Twitter) account? It’s quick and easy
How to re-register your X account
- Check your login method. If you’re using a hardware security key or passkey, it’s likely associated with twitter.com.
- Re-register your key or passkey. Go to Settings & privacy > Security And aAccess Account > Two-Factor Authentication And add your style within x.com.
- Update your saved credentials. Make sure your logins now point to x.com instead of twitter.com.